133812689 has 8 divisors (see below), whose sum is σ = 142878912. Its totient is φ = 125017200.

The previous prime is 133812673. The next prime is 133812691. The reversal of 133812689 is 986218331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133812689 - 2⁴ = 133812673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133812629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66662 + ... + 68639.

It is an arithmetic number, because the mean of its divisors is an integer number (17859864).

Almost surely, 2^133812689 is an apocalyptic number.

It is an amenable number.

133812689 is a deficient number, since it is larger than the sum of its proper divisors (9066223).

133812689 is a wasteful number, since it uses less digits than its factorization.

133812689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135367.

The product of its digits is 62208, while the sum is 41.

The square root of 133812689 is about 11567.7434705305. The cubic root of 133812689 is about 511.4844473223.

The spelling of 133812689 in words is "one hundred thirty-three million, eight hundred twelve thousand, six hundred eighty-nine".